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Topic:Ophthalmology

Ophthalmology in horses encompasses the study and treatment of eye disorders and diseases affecting equine species. Equine ophthalmic conditions can range from conjunctivitis and corneal ulcers to more complex issues such as uveitis and cataracts. These conditions can impact a horse's vision and overall well-being. Diagnostic techniques in equine ophthalmology include visual examinations, fluorescein staining, and advanced imaging methods like ultrasonography. Treatment approaches vary depending on the specific condition and may involve medication, surgical intervention, or supportive care. This page compiles peer-reviewed research studies and scholarly articles that explore the anatomy, pathology, diagnostics, and treatment modalities related to equine ophthalmology.
Comparison of solution and crystalline state protein structures. Photoacoustic study of horse and human hemoglobins.
The Journal of biological chemistry    December 25, 1983   Volume 258, Issue 24 14966-14973 
Alter GM.In an effort to assess the influence that crystallization may have on protein conformations, optical absorption spectra of crystalline state hemoglobin derivatives have been examined. These spectra were obtained from photoacoustic spectra using a computer-assisted analysis. Comparisons of crystal and solution state hemoglobins using crystal minus solution state difference spectra indicate that the conformations of these proteins are similar in both states. Crystallization does not change the absorption properties of horse oxyhemoglobin or the cyanide and azide adducts of horse and human methem...
Granules of blood eosinophils are stained directly by anti-immunoglobulin fluorescein isothiocyanate conjugates.
American journal of veterinary research    November 1, 1983   Volume 44, Issue 11 2060-2063 
Floyd K, Suter PF, Lutz H.Direct staining of the granules of blood eosinophils by anti-immunoglobulin fluorescein isothiocyanate (FITC) conjugates was observed when feline blood smears were tested for presence of feline leukemia virus (FeLV) antigen by immunofluorescent antibody. When blood smears of other species including swine, horses, cattle, dogs, sheep, birds, and human beings were examined, direct staining of eosinophils by FITC conjugates was also detected. This FITC staining was restricted to eosinophils and was not observed in neutrophils, lymphocytes, and platelets. Direct FITC staining of eosinophils does n...
Benign epibulbar melanocytoma in a horse.
Journal of the American Veterinary Medical Association    August 1, 1983   Volume 183, Issue 3 333-334 
Hirst LW, Jabs DA, Stoskopf M, Strandberg JD, Kempski S.No abstract available
Therapeutic extended wear contact lens for corneal injury in a horse.
Journal of the American Veterinary Medical Association    February 1, 1983   Volume 182, Issue 3 286 
Tammeus J, Krall CJ, Rengstorff RH.No abstract available
Pathogenic bacteria and fungi associated with extraocular disease in the horse.
Journal of the American Veterinary Medical Association    February 1, 1983   Volume 182, Issue 3 241-242 
McLaughlin SA, Brightman AH, Helper LC, Manning JP, Tomes JE.In 123 cases of external ocular disease in the horse, pathogenic microorganisms isolated with greatest frequency were Streptococcus sp (43.9%), Staphylococcus sp (24.2%), and Pseudomonas sp (13.8%). Fungi were isolated in 4.8% of the cases. In vitro testing showed that most of the Streptococcus sp isolants were sensitive to ampicillin, cephalothin, and carbenicillin. Most of the Staphylococcus sp isolants were sensitive to gentamicin, cephalothin, and bacitracin. Most of the Pseudomonas sp isolants were sensitive to polymyxin B and gentamicin.
Reaction of normal equine eyes to radio-frequency current-induced hyperthermia.
American journal of veterinary research    November 1, 1982   Volume 43, Issue 11 1938-1944 
Neumann SM, Kainer RA, Severin GA.In the main study, hyperthermia was induced by radio-frequency current to obtain a single, central, corneal lesion in the right eye and 2 separate limbal lesions in the left eye of 13 light horses and 8 ponies. Intracorneal and intralimbal temperature profiles for the procedure were obtained in a separate study from the eyes of a horse and a pony treated in the same manner. After treatment of the principal eyes and 6 sham-treated eyes, clinical observations were conducted for up to 6 months, using indirect ophthalmoscopy, biomicroscopy, and fluorescein staining. Immediately after hyperthermic ...
Corneal stromal abscesses in the horse.
Journal of the American Veterinary Medical Association    October 1, 1982   Volume 181, Issue 7 677-679 
Rebhun WC.No abstract available
Proliferative optic neuropathy in a horse.
Journal of the American Veterinary Medical Association    September 1, 1982   Volume 181, Issue 5 490-491 
Vestre WA, Turner TA, Carlton WW.No abstract available
Conjunctival hemangioma in a horse.
Journal of the American Veterinary Medical Association    June 15, 1982   Volume 180, Issue 12 1481-1482 
Vestre WA, Turner TA, Carlton WW.No abstract available
Habronemic blepharoconjunctivitis in horses.
Journal of the American Veterinary Medical Association    September 1, 1981   Volume 179, Issue 5 469-472 
Rebhun WC, Mirro EJ, Georgi ME, Kern TJ.Habronemic blepharoconjunctivitis was characterized clinically by raised yellow gritty plaques in the palpebral and bulbar conjunctivae. Lid granulomas and blepharitis were observed in some cases. On histologic examination, mast cells, eosinophils, and collagenolysis was found in most sections, but if only one section was examined an erroneous diagnosis of mastocytosis could have been made. Treatment consisted of larvicidal mixtures for lid lesions and organophosphate ophthalmic drops along with corticosteroids for the conjunctivitis. If the cornea was damaged by the gritty conjunctival plaque...
Conjunctival pedicle grafts used to repair corneal perforations in the horse.
The Canadian veterinary journal = La revue veterinaire canadienne    April 1, 1981   Volume 22, Issue 4 86-89 
Holmberg DL.Four horses with corneal perforations of various etiologies were presented for surgical correction. Pedicle grafts taken from the bulbar or palpebral conjunctiva were used to repair the defects. Two horses regained functional vision in the affected eyes while a third had significant impairment. The fourth eye, which had an intense uveitis pre and postoperative, became phthisic and blind.
Cryosurgical treatment of glaucoma in a horse.
Veterinary medicine, small animal clinician : VM, SAC    February 1, 1981   Volume 76, Issue 2 183-186 
Frauenfelder HC, Vestre WA.No abstract available
[Ocular microsurgery in horses. Histological results].
Bulletin des societes d'ophtalmologie de France    January 1, 1981   Volume 81, Issue 1 127-129 
Sourdille P, Martin-Sisteron M.No abstract available
[Microsurgery of the equine eye].
Tierarztliche Praxis    January 1, 1981   Volume 9, Issue 4 479-486 
Draeger J, Köhler L, Allmeling G, Winter R.No abstract available
Chemical keratitis in a horse.
Veterinary medicine, small animal clinician : VM, SAC    October 1, 1980   Volume 75, Issue 10 1537-1539 
Rebhun WC.No abstract available
Evaluation of two cuprimyxin formulations in the treatment of cutaneous and ophthalmic infections in horses and cattle.
Veterinary medicine, small animal clinician : VM, SAC    August 1, 1980   Volume 75, Issue 8 1307-1311 
Maestrone G, Brandt W.No abstract available
Rod and cone components in the electroretinogram of the horse.
Zentralblatt fur Veterinarmedizin. Reihe A    June 1, 1980   Volume 27, Issue 4 330-338 doi: 10.1111/j.1439-0442.1980.tb02012.x
Wouters L, de Moor A, Moens Y.No abstract available
Morphometric and electrophysiologic study of the photoreceptors in the horse. François J, Wouters L, Victoria-Troncoso V, de Rouck A, van Gerven A.No abstract available
Diagnosis and treatment of equine uveitis.
Journal of the American Veterinary Medical Association    October 15, 1979   Volume 175, Issue 8 803-808 
Rebhun WC.No abstract available
Clinical aspects of mycotic keratitis in the horse.
The Cornell veterinarian    October 1, 1979   Volume 69, Issue 4 364-374 
Bistner SI, Riis RC.Several manifestations of equine corenal ulcers caused by mycotic agents are discussed. Antifungal therapy is reviewed. Mycotic keratitis should be suspected when routine corneal ulcer therapy is nonproductive.
Intraocular melanoma in a horse.
Veterinary pathology    September 1, 1979   Volume 16, Issue 5 539-542 doi: 10.1177/030098587901600505
Murphy J, Young S.Sudden unilateral blindness occurred in a 7-year-old grey gelding Quarterhorse. Ophthalmoscopy revealed a pigmented mass arising from the nasal ciliary body of the right eye and extending around the posterior surface of the lens, and there were pigmented particles in the vitreous. Examination of the enucleated globe showed a circumscribed, black, dense and symmetrically ovoid mass with sessile attachment to the nasal ciliary region and extension to posterior lens capsule, vitreous and along the vitreal face of the detached retina to the optic papilla. The mass was composed of heavily pigmented...
[Horse-riding in the psychological rehabilitation and recreation of ophthalmologically disabled persons (author’s transl)].
Klinika oczna    May 1, 1979   Volume 81, Issue 5-6 329 
Czabańska E.No abstract available
Atresia of the nasolacrimal orifice in two thoroughbreds.
Equine veterinary journal    January 1, 1979   Volume 11, Issue 1 19-20 doi: 10.1111/j.2042-3306.1979.tb01286.x
Mason TA.Two cases of bilateral atresia of the nasolacrimal orifice are described. The presenting sign was a persistent ocular discharge, clear in the one case and purulent in the other. Treatment by the creation of a fistula between the distal extremity of the blind ending duct and the nasal cavity was successful in both cases.
Primary ocular squamous cell carcinoma with metastasis in a horse.
Veterinary medicine, small animal clinician : VM, SAC    March 1, 1978   Volume 73, Issue 3 287-290 
Eversole TG, Lavach JD.No abstract available
Corneoconjunctival foreign body in a horse.
Veterinary medicine, small animal clinician : VM, SAC    December 1, 1977   Volume 72, Issue 12 1870-1871 
Peiffer RL.No abstract available
Vasculature of the equine and canine iris.
American journal of veterinary research    November 1, 1977   Volume 38, Issue 11 1791-1799 
Anderson BG, Anderson WD.Methyl methacrylic casts were prepared and tissue was freshly collected for histologic examination to compare the vascular supply and the structure of the vessels of the iris in the adult horse with those of the dog. In the horse, ciliary blood vessels divided in the iris and formed a complete major arterial circle of the iris. In the dog, the ciliary blood vessels divided in the ciliary body and, by means of recurrent branches, formed a complete arterial circle. From this circle, radial arteries extended toward the pupillary margin. The radial vessels in the horse were nearly straight and joi...
Horner’s syndrome in large animals.
The Cornell veterinarian    October 1, 1977   Volume 67, Issue 4 529-542 
Smith JS, Mayhew IG.The sympathetic nervous innervation of the head was surgically transected in the horse, cow, sheep and goat. The site of transection was preganglionic in all 4 species and ganglionic-postganglionic in 2 additional horses. The Horner's syndrome, manifested as a result of the iatrogenic lesion, varied with the species. Ptosis was the most constant sign in all species. Unilateral sweating over the face and proximal neck, particularly at the base of the ear, was the most prominent feature in the horse. The cow revealed distension of vasculature and cutaneous heat of the pinna, and a reduced produc...
Problems of the equine iris: what is your diagnosis?
Veterinary medicine, small animal clinician : VM, SAC    September 1, 1977   Volume 72, Issue 9 1467-1471 
Joyce JR.No abstract available
Equine night blindness.
Journal of the American Veterinary Medical Association    May 1, 1977   Volume 170, Issue 9 878-880 
Joyce JR, Witzel DA.No abstract available
Neoplasia of the equine eye, adnexa, and orbit: a review of 68 cases.
Journal of the American Veterinary Medical Association    January 15, 1977   Volume 170, Issue 2 202-203 
Lavach JD, Severin GA.No abstract available